HUGE BEFORE SELFIES
Who Invented The Mirror?
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The silvered-glass mirrors found throughout the world today first got their start in Germany almost 200 years ago.
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LifesLittleMysteries
LET'S TALK ABOUT POOP
Why Is Fecal Matter Brown?
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Feces are fascinating. Flush down your initial grade-school scatological silliness and you'll discover a world of energy efficiency and unparalleled waste management.
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IN CASE YOU'VE BEEN WONDERING
Why Does Your Arm Fall Asleep?
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Here's a super quick explainer on why your arm falls asleep.
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THINGS YOU DIDN'T KNOW YOU DIDN'T KNOW
Why Do Air Traffic Control Towers Have Slanted Windows?
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Large airports are slightly different all over the world, but one constant is the ubiquitous air traffic control tower, which always has windows that slope toward the tower at the base.
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SPORT
What's The World's Fastest Tennis Serve?
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Tennis is one of the fastest sports on the world — for comparison, the fastest slap shot in hockey was just 106.6 mph (172 kph), and the fastest pitch in baseball was a mere 100.9 mph (162 kph). Both male and female tennis players regularly hit serves clocked at over 120 mph (193 kph).
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ZERO G GROOMING ETIQUETTE
How To Clip Your Fingernails In Space
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Every day tasks become a challenge in zero gravity.
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CATS OR DOGS?
What's The Most Popular Pet?
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Which pet is the most popular?
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SCIENCE EXPLAINS
How Do Mirages Work?
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Puddles don't just evaporate instantly into thin air. Buildings don't shimmy like belly dancers. But sometimes, mirages make faraway objects look like they're rippling.
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PHOTOGRAPHY LESSONS
How To Photograph A 247 Foot Tall Sequoia
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Your assignment: photograph The President, the second-largest tree on Earth, for National Geographic. What do you do?
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SULFURIC ACID?!
Why Does Slicing Onions Make Me Cry?
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When your knife slices through a crisp onion, it tears through cells, releasing the cells’ contents which just so happens to cause an unpleasant chemical reaction in your eyes.
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